*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
hr{
    margin: 15px 0;
}
.goods-container{
    width: 1000px;
    margin: 50px auto;
}

.goods-list{
    margin: 0 -15px;
}
/* 单个商品的样式 */
.goods-container .goods-item{
    width: 25%;
    float:left;
    padding: 15px;
    height: 321px;
}